13 replies to this topic

[sasman]

After many months of waiting I have managed to get some Barium nitrate its GRG grade 98% .thats all the information i have there is no certificate of anaylsis..

I am hoping this will be good enough for pyro use?..I have not used Barium before due its toxic nature..there was a label on the side that said harmful then one below saying oxidiser.. but no label saying TOXIC?..

I have noticed that timstar's barium nitrate is also 98%..So i assume that 98% is normal GRG grade?..

Has anyone used 98% GRG (General Reagent Grade)and got good green colour ?..

Also i have managed to find a supplier of Pergut S20..(Parlon)..The only catch is you have to order largeish quantities .i dont mind getting some but on the PDF data sheet it mentions shelf life approx 6 months?? ..Now this shelf life may only apply to its non pyro use? .. Has any member got parlon/pergut that they have had over 1 year and still works ok?.. or does it go off?..

Also i know this question has been asked before .. but its about sulphur .. i have always used garden sulphur. but i read somewhere that its actual sulphur content can be as low as 85%..So this year i would like some real sulphur..Skylighter is my obvious choice but to buy a few Kgs costs goes up..I can get some roll sulphur? at a reasonable price .. its rhombic sulphur..is this the same as skylighters sulphur flour?..

[Richard H]

Regarding the Ba(NO3)2 it should be just fine. I would expect the parlon to be o.k. too.

[ramplord]

I've not much experience with Bariumnitrate, but when I use it I just avoid most contact and wash my hands after it. I think you can find nice datasheets about it all over the net, they can tell you wich grade of toxicity it has. And 98% will do great for Pyro.

I recently organised an action of buying in a large amount of Pergut S5, and sell it over to a couple of people on the Dutch forum I'm in. The datasheets of it tells that it's still good after a couple years, when on a dry place and in dark. Since I just got it I can't tell you if it's still doing great after a year...
(I btw have some kilo's left, so if you're interested.. PM)

And for sulphur you should look at the internetshops wich sells it from 25 kilo. In that amounts it cost just a couple of euro's per kilo, and it's allmost allways more than 98% pure.

My apoligies for the grammar etc, I'm still a Dutchmen

[sasman]

ramplord you mention pergut S5 ? do you know if there is a difference between pergut S5 and pergut S20?. I also have looked on ebay and didnt find any 25 kg of sulphur..

[Andrew]

rhombic sulphur is roll sulphur, the safer one that you want to use in fireworks. flowers of sulphur is not what you want, skylighter's website clearly states that the "flour" is not the same as flowers, and as it's acid content is "very low", this seems pretty good sulphur to use. Tad expensive once you add the shipping costs, and you have to wait an age to actually get it.

[BigG]

ramplord you mention pergut S5 ? do you know if there is a difference between pergut S5 and pergut S20?. I also have looked on ebay and didnt find any 25 kg of sulphur..

the number 5, 20, 40 (Pergut 5, 20, 40 etc) refer to the Viscosity of the material. So Pargut 5 has a Viscosity of about 5, while Pargut 20 has a Viscosity of 20.

Okay - so I can feel two questions coming:
1) What the HELL is viscosity?!?!
answer: I rather not answer it myself, and I think that you will understand why after reading all about it at: http://xtronics.com/...e/viscosity.htm

2) So what is better for Pyro?
answer: Do you really expect me to answer that? okey... hmmm, I am really a bit busy now - maybe later. I suspect I will feel quite tired later as well... Okay, Okay - I haven't got a clue! Try it for yourself

[ramplord]

ramplord you mention pergut S5 ? do you know if there is a difference between pergut S5 and pergut S20?. I also have looked on ebay and didnt find any 25 kg of sulphur.. 

Pfieuw, didn't know, works fine with me

And looking on ebay isn't the way do do it. Use google, search on 'chemical supllier' or something like that and look for big distrubuting companies.

I don't know if it's okay to post links, if it's so, I will post some

[Andrew]

the number 5, 20, 40 (Pergut 5, 20, 40 etc) refer to the Viscosity of the material. So Pargut 5 has a Viscosity of about 5, while Pargut 20 has a Viscosity of 20.

Didn't know parlon was a liquid! or are Pergut and parlon different things?

[Creepin_pyro]

Didn't know parlon was a liquid! or are Pergut and parlon different things?

It is my understanding that Pergut is essentially the same substance as Parlon, just under a different trade name. Both are Chlorinated Rubber, and neither are liquid (at least in the states I've seen them in)

I too would be interested to learn more about the shelf life of the various chlorine donors. From the MSDS of Parlon, it seems as though the shelf life is indefinate if stored in a dark place, in an air-tight container. I havent managed to track down the MSDS' of either chlorinated polyethylene or Pergut

I have some "Parlon" from America which is much more than a year old, and still seems to function exactly the same as the day I bought it...

Edited by Creepin_pyro, 27 May 2005 - 05:09 PM.

[Andrew]

The main monomer used in artificial rubber is isoprene, I think . Searching for chlorinated polyethylene will not get you very far as you?ve found already. Try isoprene, but your probably better talking to the manufacturer.

[RegimentalPyro]

Didn't know parlon was a liquid

You'd be suprised at the things that are officially a liquid.

Pitch , Sand [under some conditions] and glass


Yes glass is a liquid! In old houses with the original window glass, the bottom of the glass pane is always thicker than the top. This is due to the fact that over a *long* period of time the glass "flows" to the bottom.

[adamw]

I think the term Viscosity is used for powders due to the fact that smaller particles sizes will have more 'viscosity' than larger ones (ie act of particles rubbing together etc etc etc) - you can use it as a rough guide to the particle size.

[sasman]

Well after further research i have found that some fireworks manufacturers use Pergut S10..

So i have gone for Pergut S10

[rooster]

I know a firework factory that uses s10 and s15 variety. I have both the s15 and s20 variety. I do not this it refers to praticle size, but rather the viscosity of a solution or something(in acetone?)